Had one until this week, when the AF motor broke. It still runs but it stops at 2.5m. Something has been broken inside. When it stops I change to MF, rotate the ring and I feel it "click", but ir never passes through that 2.5m focus point. My local CPS says they dont even open that kind of lens anymore and spare parts hard very very hard to find. Keep that in mind. For me I think it's the end for my old 80-200L.
But if you find one in good shape, dont hesitate if you can get it at 400eur max. (seen a few on eBay from time to time, from The Netherlands, UK or Germany). Its super sharp, very nice contrast, it works with third party TCs, its solid metal body helps when handelding for sports, althought the main drawback is the AF being a little bit slow, if compared with todays USM motors.
Alternative to the old 80-200L is the 70-200L without IS.